LONDON — Indie digital rights organization Merlin has promoted Charlie Lexton to chief operating officer, responsible for overseeing licensing negotiations with digital partners and increasing revenues for its labels and distributors.Merlin, which is head quartered in London and has distributed more than $2 billion to its almost 900 members since launching in 2008, has also announced two new hires: Shrina Patel as director of business and legal affairs and Katie Eckett as manager of the same